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blood in the skin, accompanied occasionally with haemorrhages from mucous membranes. The varieties of purpura may be conveniently divided as follows: (a) toxic, following the See also:

ADMINISTRATION (Lat. administrare, to serve)

administration of certain drugs, notably See also:

COPAIBA, or COPAIVA (from Brazilian cupauba)

copaiba, See also:

QUININE

quinine, See also:

ERGOT, or SPURRED RYE

ergot, See also:

BELLADONNA (from the Ital. belle donna, " beautiful lady," the berries having been used as a cosmetic)

belladonna and the iodides; also following snake-bite; (b) cachectic, seen in persons suffering from such diseases as See also:

TUBERCULOSIS

tuberculosis, See also:

heart disease, See also:

cancer, See also:

Bright's disease, See also:

JAUNDICE (Fr. jaunisse, from jaune, yellow), or IUTERUS (from its resemblance to the colour of the golden oriole, of which Pliny relates that if a jaundiced person looks upon it he recovers but the bird dies)

jaundice, as well as from certain of the infectious fevers, extravasations of the See also:

KIND (O. E. ge-cynde, from the same root as is seen in " kin," supra)

kind above mentioned being not infrequently See also:

PRESENT

present; (c) neurotic; (d) arthritic, which includes the See also:

FORM (Lat. forma)

form known as " Purpura simplex," in which there may or may not be articular See also:

pain, and the complaint is usually ushered in by lassitude and feverishness, followed by the See also:

APPEARANCE (from Lat. apparere, to appear)

appearance on the surface of the body of the characteristic spots in the form of small red points scattered over the skin of the limbs and See also:

TRUNK (Fr. tronc, Lat. truncus, cut off, maimed)

trunk. The spots are not raised above the surface, and they do not disappear on pressure. Their See also:

COLOUR (Lat. color, connected with celare, to hide, the root meaning, therefore, being that of a covering)

colour soon becomes deep purple or nearly See also:

black; but after a few days they undergo the changes which are observed in the See also:

case of an See also:

ORDINARY (med. Lat. ordinarius, Fr. ordinaire)

ordinary bruise, passing to a See also:

green and yellow See also:

hue and finally disappearing. When of See also:

minute See also:

SIZE

size they are termed "petechiae" or " stigmata," when somewhat larger " vibices," and when in patches of considerable size " ecchymoses." They may come out in fresh crops over a lengthened See also:

period. Purpura rheumatica (Schonlein's disease) is a remarkable variety characterized by sore See also:

THROAT (O. Eng. protu, prote or }Prota, possibly from preotan, to press, whence threat, or, with loss of initial s, connected with strut, to swell)

throat, See also:

FEVER (Lat. febris, connected with fervere, to burn)

fever and articular pains accompanied by purpuric spots and associated with urticaria and occasionally with definite nodular infiltrations. This is by many writers considered to be a See also:

SEPARATE

separate disease, but it is usually regarded as of rheumatic origin. Purpura haemorrhagica (acute haemorrhagic purpura) is a more serious form, in which, in addition to the phenomena already mentioned as affecting the skin, there is a tendency to the occurrence of See also:

HAEMORRHAGE (Gr. atµa, blood, and prryvvvac, to burst)

haemorrhage from mucous surfaces, especially from the See also:

NOSE (O.Eng. nosu, cf. Dutch neus, Swed. nos, snout; the Aix in Provence. Both at Aix and at Lyons he acquired great connexion with O.Eng. nasu is obscure, cf. Ger. Nase, Lat. pares, distinction by his labours during outbreaks of the plague. In nostrils,

nose, but also from the mouth, lungs, See also:

STOMACH (Gr. vrbsaxos from arbga, a mouth)

stomach, bowels, kidneys, &c., sometimes in large and dangerous amount. See also:

GREAT

Great See also:

PHYSICAL

physical prostration is See also:

apt to attend this form of the disease, and a fatal result some-times follows the successive haemorrhages, or is suddenly precipitated by the occurrence of an extravasation of blood into the See also:

BRAIN (A.S. braegen)

brain. (see above) by the See also:

ACTION

action of aqueous See also:

AMMONIA (NH3)

ammonia at 15o° C. It also results instead of the expected 7-methyl-2-oxy-6-aminopurin, when 7-methyl-6-amino-2-chlorpurin is treated with dilute alkalis (E. See also:

Fischer, Ber., 1898, 31, p.

542), owing to See also:

RING (O.E. hring; a word common to Teutonic languages; and probably cognate with the Lat. circus, Gr. KtpKOS or KpLKOS, Skt'. chakra, wheel, circle, cf. also " harangue "); in art, a band of circular shape of varying sizes, made of any material and used f

ring splitting in the 1.6-position, followed by eliminating of halogen See also:

ACID (from the Lat. root ac-, sharp; acere, to be sour)

acid. Thiopurins.—W. Traube (See also:

Ann., 1904, 331, pp. 66 seq.) has obtained many compounds of the See also:

PURIN, C5H4N4

purin See also:

GROUP

group by using thiourea, which is condensed with cyanacetic ester, &c., to form thiopyrimidines.

End of Article: PURPURA

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